Airplane inner-controlled spot lamp



Sept. 6, 1932. V R. H. HUMMERT 1,875,607

' AIRPLANE INNER CONTROLLED SPOT LAMP Filed July 25, 1930 INVENTORI 4L; ATTORNEY Patented Sept. 6, 1932 ROBERT; H. HUMMERT, OFDAYTON, 01110, AssIGNoR T0 THE-5.1K. 'rizomson'ivmnurao- TUBING .GOMP'ANY, OlELDA Y fEON,

ornqaconronarronor oHIo I 'AIIRZELANE 'INNER-CONTROL'LEDSPOT LAMP 7 "Application filed-July 25,

This invention :relateston'ew and useful improvements .in airplane inner-controlled spot lamps.

It is one of 'the principal 1 objects of my invention to "provide for airplanes, aspot' lamp which may; easily bejprojected through anoopening in the bOttOIIliOf the \fuselagefor the {purpose of lighting'therlandingl field, or :for signaling, night photography .or other uses.

After it'has beenvused, my spot'rlamphmay be; easily drawn :backlintozthe :streamlinefbottom of the,fuselages-andalocked there-until its light is again needed. I

The spot .lamp .is also constructed :that the operation of proj ecting'it .belowthe fuselage may beeasily efieCtedLby the pilot or other.

operator, and ,thereafterncontrolled ibylhim to direct its rays in the desired mannerJ Other important and incidental; objects willibe. brought. out in the :following specification; and (particularly; set .forth in the subj'oined claims.

ln'the accompanying drawing-illustrating my invention, Figure l is aside :view of an airplane containing my inner-controlled spot lamp. Figure .2 .is a cross sectional view taken through the fuselage, showing the spot lamp within the streamline bottom of the same. Figure3 is a-il'ongitudinal sectional view takentthrough my airplane firmer-controlled spot lamp. Figure A is allongitudinal sectional view takenfithroughatheiulcrum collar. And .EFigure .5 is =a cross sectional view taken through my airplane spot lamp on the line 5-5 of Figure 3.

Referring to the accompanying drawing for a detailed description of my invention, the, numeral 1 designates an airplane fuselage having below its floor 2' and lower supporting longerons 3, a streamline bottom 4. (See Figure 2.) V

Secured to the floor 2 at one side of the pilots seat (not shown) is a sleeve bracket 6 formed with a wide base flange that is secured to the fuselage floor by bolts 7 and nuts 8. This bracket has an axial hole to freely re ceive a lamp supporting tube that projects downwardly through a hole 10 in the floor 2. Attached to the lower end of this tube 9 is 1930. -Seria'l 1T0. 470x285 a gcarfhousing 11 which =ifor1ns the pivotal support foraspot lampl l (See Figures :2-and j i l Secured tothetubeQ, a: short distance'above 'thegear housing 11 is astop collar 1 2." Projecting axiallyflupward fromithe icollar 12=is a "PiIlzldthLl? enters: an axial hole in the bracket "sleeve (into preventsthe tube .9 from turning wlhenit-he spot; lamp-is fully 'withintheffus'e- 'lage bottom 4 as shown in FigureVQ. a 2;.

For the a purpose of automatically looking the spot lamp 11 in its out of the'way positionwithin the-streamline bottom of the fuse- Tlage, :'I have {provided :the following means.

Fixedly-securedto .theupper end portion of :1 I

the tube .9 by a screw 14isa fulcrum collar l'5iformedvwithza peripheral slotwh-ose walls tterminatelin'two parallel aixial fianges 16, 16. I V

("Seej Figures 3 and 4.)

-Fulcrumed between the flanges 16,16 by ,za pivot pin 1711s a guiding and locking bar :18. The front end o'fthis-bar freelyenters an axial slot 19 in theoperiphery, of the sleeve portionBOof-the bracket 6, and is held-within the" slot by the outward .pressure :eXerted against its upper i end by a 1 coil spring 21 seated within a recess :22

tion of the collar 15. I a a 1 The lower or inner end of the bar 18 is .formed with a :radial shoulder;23 which is snapped against'the upper end otthe sleeve .20 by.-the-spring Ql-to lock the spot lamp in its out of the way position. See Figures 2 and 13.11) 1 Arradial stop ;pin :23 1is carried: by theouter end of the-bar. 7 Immediately below the spot lamp ll infthe *bottom- 4 of EthB :fuselage there 'is-a hole 24 closed by. a idown'wa'rdly swinging doorz25, :although any other; type of clo0r"'n1ay1'be prowiiied. JF or projection through thehole 24 zthewspot lamp is unlocked byxpressing inwwardlympon the reariend of the bar'1'8 to raise its shouldered portion :23 abovethe upper edge of the sleeve 20. The lower end of} the char '18 is 1 then --tfree s to maven downwardly through the slot 19' to prevent thespotlamp :iromiturning during its descent;

in'the slottedpor- Formerl:on1the:inner end of the .i-fulcrum gcolla'rearectwo :axialilugs126 adapted to enter zaxial matches 27 :in zzthe :upper end ;portion position shown in Figure" 1, its operation isguideclip 28 on the of the sleeve of the bracket 6. The engagement of these lugs in the notches 27 assist the bar 18 in holding the tube 9 in a stationary position for an operation of the spot lamp through means to be hereinafter described.

Electric current is conducted to the spot lamp 11 by a flexible electric cable 27 which leads from the gear housing 11 through a .hole in the bracket flange, then through a collar 12 and a similar guide clip 29 on the fulcrum collar 15, to a source of electric current (not shown).

When the spot lamp is in its pro ected inner controlled by the semi-spherical handle portion 30 and hollow shaft 31' within the tube 9, and semi-spherical handle portion 32 locked therein the engagement of the shouldered end of the bar 18 with the upper lamp turning means, a bracket sleeve through I and shaft 33 which projects through 'the hollow shaft 31, in the manner described in my 'United States Letters Patent No. 1,?20,836, 7 granted July 16th, 1929. Whilepreferring this method of controlling the spot lamp 11*, it may be operatedby any other means that lend'themselve-s for use with my projecting device above described.

The spot lamp maybe easily operated by the pilot at all times, since he has'only to press inwardly upon the upperend of the locking bar '18 and push the lamp 11 through the hole in the bottom of-. the fuselage until the lugs 26 engage in the notches 27 in the sleeve bracket. Then the supporting tube 9' will be firmly heldagainst rotation while the shafts 31 and 83 are easily turned by the handle portions 30' and 32 respectively to bring the lamp to the desired position for signaling, photographingandlanding. After the need tor its use has ceased, the lamp may be easily drawn back into'the fuselage by its handle portion where it will be automatically end of the bracket sleeve; 7

Having described my invention, I claim:

1; A spot lamp of the type described, comprising an elongated lamp-supporting tube, a spot'lamp dirigibly secured to the outer end 'of said tube, shaft 'means in the latter for turning the spot lamp, a handle carried by the V inner end of said tube for "operatingthe which said tube isjfree to be moved to an specified. 7

edp. lamp through said bracket sleeve downwardly which said tube is free to be moved to an ad vanced position for operation of said lamp, said bracket sleeve formed with an axial slot, a fulcrum collar fixedly secured to the inner end of said tube, and a member pivotally secured to said collar, for entrance at its inner end intosaid groove for the purpose 3. Aspot lamp of the type described, comprising an elongated lamp-supporting tube, a spot lamp dirigibly secured to' the outer end of said tube, shaft means in the latter for turning the spot lamp, a handle carried by the inner. end of said tube foroperating the lamp turning means, a bracket sleeve through which said tube is free to be moved to an advanced position for operation of said lamp, said bracket sleeve formed with an axial slot- 'a fulcrum collar'fixedly secured to the inner end of said tube, a bar fulcrumed on said col lar, a shouldered-outer end on said bar for travel throu 'h'the axial slot in the bracket tube mova-bly secured to said bracket for a straight down movement through said holes,

and a spot. lamp carried by the loweriendof said tube; r

5. In an airplane having a fuselage, a floor in the latter,'a bracket sleeve secured to said fioor, the latter formed with a hole below said bracket sleeve, said bracket sleeve formed w th an axial slot, an elongatsupporting tube movable through the hole in said floor, a spot lamp dirigibly secured to the lower endof said tube fOr1PTOJQCt1OI1 below the fuselage,and locking means carried by vsaid tube for en trance into said slot in the bracket sleeve, for

the purpose specified, a

V In witness whe'reofI have hereunto set my hand this 23rd day of-July, 1930.

- Q ,ROBERT. E. HUMMER-T.

advanced position for operation of said lamp,

said bracket sleeve formed with an axial slot, a collar fixedly secured to the innerend of said tube, and a locking member projecting from said collar into the slot in the bracket sleeve, for the purpose specified.

2. A spot lamp of'the type described, comprising .an elongated lamp-supporting tube,

a spot lamp dirigibly secured to the outer end of said tube, shaft means in the latter for turning the spot lamp, a handle carried by the inner end of said'tube for operating the lamp turning means, a bracket sleeve through 

